The nurse assessing a premature newborn infant auscultates a continuous machinery-like murmur.
This finding is associated with which congenital heart defect?

Pulmonary stenosis

Patent ductus arteriosus

Ventricular septal defect

Coarctation of the aorta

Answer and Explanation

The Correct Answer is B

This is because a patent ductus arteriosus is a congenital heart defect that involves a defect in which the fetal shunt between the aorta and the pulmonary artery fails to close. This causes a continuous machinery-like murmur that can be heard on auscultation.

Choice A is wrong because pulmonary stenosis is a narrowing of the pulmonary valve or artery that obstructs blood flow to the lungs. It causes a systolic ejection murmur that is best heard at the upper left sternal border.

Choice C is wrong because the ventricular septal defect is a hole in the wall between the ventricles that allows blood to flow from the left to the right side of the heart. It causes a loud, harsh holosystolic murmur that is best heard at the left lower sternal border.

Choice D is wrong because coarctation of the aorta is a narrowing of the aorta that reduces blood flow to the lower body. It causes a systolic murmur that radiates to the back and weak or absent femoral pulses.

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Correct Answer is C

Explanation

Children with asthma who are taking long-term inhaled steroids should be assessed frequently to monitor for this increased risk because some studies have shown a growth delay in children treated with moderate to high doses of inhaled steroids. This appears to occur only during the first year of treatment and may be reversible.

Choice A is wrong because cough is not a side effect of inhaled steroids, but a symptom of asthma itself.

Choice B is wrong because osteoporosis is not a common side effect of inhaled steroids in children, but a possible risk for adults who use high doses of inhaled steroids or oral steroids.

Choice D is wrong because Cushing’s syndrome is not a side effect of inhaled steroids, but a rare complication of oral steroids.

A. Most mothers have a diet deficient in vitamin K, which results in the infant’s being deficient. B. Vitamin K prevents the synthesis of prothrombin in the liver and must be given by injection. C. Bacteria that synthesize vitamin K are not present in the newborn’s intestinal tract. D. The supply of vitamin K is inadequate for at least 3 to 4 months, and the newborn must be supplemented.

Correct Answer is C

Explanation

Bacteria that synthesize vitamin K is not present in the newborn’s intestinal tract. Vitamin K is essential for blood clotting, and newborns are at risk of bleeding problems due to their lack of vitamin K. Therefore, vitamin K is given by injection to prevent hemorrhagic disease in the newborn.

Choice A is wrong because most mothers do not have a diet deficient in vitamin K, and vitamin K deficiency in newborns is not related to the maternal diet.

Choice B is wrong because vitamin K does not prevent the synthesis of prothrombin in the liver, but rather enhances it. Prothrombin is a clotting factor that requires vitamin K for its production.

Choice D is wrong because the supply of vitamin K is not inadequate for at least 3 to 4 months, but rather for a few days until the newborn’s intestinal bacteria start producing it.

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The nurse assessing a premature newborn infant auscultates a continuous machinery-like murmur. This finding is associated with which congenital heart defect?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

It is now recommended that children with asthma who are taking long-term inhaled steroids should be assessed frequently to monitor for increased risk of:

Correct Answer is C

Explanation

The nurse administers vitamin K to the newborn for which reason?

Correct Answer is C

Explanation

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The nurse assessing a premature newborn infant auscultates a continuous machinery-like murmur.
This finding is associated with which congenital heart defect?